Anyone have VB.Net or VBA code to ascertain if an Excel Object is positioned over (Hiding) spreadsheet data?I have code to create/position a chart object. Where would I begin to determine if there is data "under" an object.
View 7 RepliesMy requirement is to graph (scatter graph) data from 2 arrays. I can now connect the data from the array and use it on the chart. My question is, how do I set the graph's X- and Y- axes to show consistency in their intervals?
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I have a chart in Excel that I'd like to use a subtitle on. There is no SubTitle Property on the chart object, so I looked in the Excel User interface and found that you can only create a sub-title by using a text box. The text box looks like its associated with the chart, not the worksheet, so how would I access that text box from code?
View 1 RepliesI am retrieving data from my database using a TableAdapter. I was wondering if there is some way I can tell (or be informed) that the data has changed and I therefore need to do another Fill? That way I can just Fill on demand rather than every time the user requests to see the information and I am forced to do a Fill before showing the data because I don't know if is current or not. For the record I am using an ODBC connection string to access a Pervasive PSQL database
EDIT I was thinking I could check the last write time of the MKD file to check if this has changed but this doesn't seem to be reliable as it is not written to until the connection is closed. Does anyone know the circumstances when this is written?
Are there any good free graph/chart dll's that anyone knows of?
View 5 RepliesHow do I link data in an Excel spreadsheet to a chart object in Visual Basic 2010? Really basic here, I just want to draw a single simple line chart from a single column of data. Is it easier just to read the data into an array (which I can do) and somehow get it into the chart?
View 1 RepliesI have a chart that I plot data points onto however if the user replots the graph the old datapoints are still there hiding the new datapoints. Essentially how can I clear the chart area of a graph?
View 2 RepliesI would like to include a bar chart in my program. My present tool box does not have that control. how I can include that control in my tool box.
View 2 RepliesI"m having a bit of trouble getting my pie graph to work. I'm not too sure if I should be posting here, but it's about vb so I thought it would sort of fit. I've used the chart control from the toolbox, and dragged one of those across to use. I can't get more than one item to display in the chart.
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I have a series of x and y co-ordinates that I would like to plot on a line graph. Can anyone recommend any simple tutorials that would get be started?I have my chart component on the form, I'm guessing that I need to declare a collection of datapoints and loop through the adding each to the graph
View 5 RepliesHow do I link data in an Excel spreadsheet to a chart object in Visual Basic 2010? Really basic here....I just want to draw a single simple line chart from a single column of data. Is it easier just to read the data into an array (which I can do) and somehow get it into the chart?
View 1 RepliesI've got a bar chart on my form which when I click a button, it populates with some data showing the clients net position, which is their assets vs their liabilities. This is shown on a year-by-year basis, so the graph will go up or down accordingly. If the graph goes into negative, or is negative at any stage, I would like it to turn red, and leave the positive values green. I have no idea how to do this, or even where to start looking into the properties. I'm still new to using the charts. How can I make the x-axis labels in increments of 5 from 0, instead of increments of 5 from -1?
View 3 RepliesI am trying to make a line chart and from what I've read using the chart control is the best way to go about it, but I have no idea how to do that.
View 4 RepliesI'm working in VS2010 on a visual basic application. It takes in serial port data, writes it to an access database, and then graphs the data.The data only comes in once every minute, so it's not like I'm building an oscilloscope. Right now, the chart is reading from the database using a table adapter and graphing just fine, so long as I keep the number of records in the database low.If I add too many records to the database, the chart shows a red "X" through it. I've played with changing the axes, but it is still a problem.I don't really need to graph the whole database.The twenty most recent records would suffice.How can I make a chart series with only a small subset of the database in it.Perhaps it cold be populated with a query?
View 1 RepliesI have a ms access database with few tables and queries. I need to draw a graph/chart with the results of the queries in excel.
Is it possible to do with vb.net coding?
I want to insert an image of a chart(graph) from vb .net to a Word document. I can open a new doc but I can't get the chart exported to it.
View 3 RepliesI have two values those are contiguously One is Time along x-axis and second is the CPU Usage in percentage along Y - Axis. I want to draw a continuous line Chart/graph what ever called.
View 11 RepliesI am working on an application that ties into a SQL database on the back end. Currently the main form contains a series of combo boxes (Graph type, data format, location, and customer), two date pickers, and a button to launch the selections in a new form. Everything works just fine except there are a couple of things I can't seem to accomplish.
Example Data:
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Case Select (with commented out lines for variations attempted):
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1) I would like to be able to use some sort of case statement to color the bars in my chart based on value. I have tried approaching this in a couple of different ways but neither of the options seem to work. First, I tried this (the If Not is used because depending on what values are passed to the stored procedure in SQL, different columns will be returned):
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Only one series is created with this method, so I can see how/why a Select Case would set all bars the same color. I have also tried creating a series for each row in the returned dataset but it results in 22 bars of different colors, for each of the rows (484 bars):
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So is there any way to modify the second set of code there to only select the value from the "Percent TMHB" cell that corresponds with Row(i), rather than ALL values from the "Percent TMHB" column for EACH Row(i)?
2) Since I am drawing/creating these graphs in a new window, is there any way to also create a new timer on the "newFrm" and have the tick refresh the data? I've struggled with this but I feel like it should be easy. Say someone chooses a "TMHB", "Percentage", "Chicago", "All" (Graph type, data format, location, customer) and launches the graph, which opens in a new window, then they want to do "TMHB", "Percentage", "LA", "All" and have both windows up, refreshing automatically throughout the day. Can I somehow store the SelectCommand.Parameters values in the new form/timer so that it will query the database again every 5 minutes?
Example code for the StoredProcedure and creating the new form:
If combo_GraphType.SelectedItem = "TMHB" Then
Dim newFrm As New Form
Dim newChart As New Chart
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When I use this code it gives a syntax error near sqlStatement.ExecuteReader()[code]...
View 1 RepliesI'm deserializing an object and in certain cases it works fine, however in others it fails. The exception is essentially meaningless to me, but there has to be a way to figure out where exactly it failed so i redirect my debugging.
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I amincluding the code I am using below. My problem is syntax. I can't any documentation on the MS Chart control. Th code below I found in various code examples, but I can't seem to find the remaining necessary examples fro labeling the X and Y axis. I have 12 monthly values, Jan-Dec that I am trying to plot. I can the graph to print, but don't know how to lable it. Why does this have to be so hard to discover?
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how to apply inserting data syntax into the Try catch..
sqlstr = "insert into StudentDiplomaTable (LastName, FirstName, MiddleName, StudentNo, SoNo, CourseTaken, Honors, DateofGraduation, Copy, DateIssued, DateRealesed, Notes) values ('" _
& txtlastname.Text & "','" _[code]......
When i'm tryed to print Data chart the resolution of the chart changed as shown:
View 3 RepliesBasically I've coded an Excel 2007 project in VB.NET 2010 that allows you to create charts with a fair amount of interactivity. I want the user to be able to save and reopen this workbook and still have that interactivity in any already-created charts, so they don't have to re-create them.
When I create the charts, I use Sheet1.Controls.AddChart(...), which returns a Microsoft.Office.Tools.Excel.Chart with which I can handle events and such. However, when I reopen the file and look through the Sheet1.Controls collection, there are no Chart objects. Accessing the charts through Sheet1.ChartObjects.Chart gives me Interop Charts, when I need the Tools Charts.
I cannot seem to figure out why VB keep throwing me this exception but here is the code
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Given an object instance, how can I recurse its members (i.e. the whole object graph) for an object of a specific type, or one that inherits from a specific type?
View 1 RepliesI'm trying to read a file on a SharePoint 2010.I am using Visual Studio Express 2010.I have looked at a number of different solutions but just can't seem to find the correct path to go down to ascertain the best solution.I only need to know how to download one file from a SharePoint directory.
View 3 RepliesI have a table databound to a combobox
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I need to insert a table in a richtextbox where the caret is positioned.
how can i do this without using the clipboard?
need to code up a bar graph in vb.net..
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